12221202020101 has 4 divisors (see below), whose sum is σ = 12224603415852. Its totient is φ = 12217800624352.

The previous prime is 12221202020059. The next prime is 12221202020117. The reversal of 12221202020101 is 10102020212221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8530196422500 + 3691005597601 = 2920650^2 + 1921199^2 .

It is a cyclic number.

It is not a de Polignac number, because 12221202020101 - 2¹⁹ = 12221201495813 is a prime.

It is a super-2 number, since 2×12221202020101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221202020141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1700692486 + ... + 1700699671.

It is an arithmetic number, because the mean of its divisors is an integer number (3056150853963).

Almost surely, 2^{12221202020101} is an apocalyptic number.

It is an amenable number.

12221202020101 is a deficient number, since it is larger than the sum of its proper divisors (3401395751).

12221202020101 is an equidigital number, since it uses as much as digits as its factorization.

12221202020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3401395750.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12221202020101 its reverse (10102020212221), we get a palindrome (22323222232322).

The spelling of 12221202020101 in words is "twelve trillion, two hundred twenty-one billion, two hundred two million, twenty thousand, one hundred one".